How long is the flight from Idaho to London?

A quick flight from Idaho to London can take about 16h. Lufthansa provides one of the quickest options available for as low as £446. The distance from Idaho to London is about 4658 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Idaho to London?

While some choose either Spokane - London Heathrow or Spokane - London Gatwick, Boise Air Term. Gowen Fld - London Heathrow is the most popular route from Idaho to London.

Can I find deals for flights from Idaho to London that include hotel bookings?

Yes. In addition to deals on Idaho to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Idaho to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to London.

Can I find deals for business class flights from Idaho to London?

Yes. Cheapflights offers flight deals from Idaho to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£227+ Flights from Idaho to London

Cheap flight deals from Idaho to London

Enter your travel dates to find the best prices.

Cheapest flights from Idaho to London
Explore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.

Wed 31/1208:20BOI - LHR

1 stop14h 35mUnited Airlines

Thu 8/118:00LHR - BOI

2 stops34h 52mUnited Airlines

Deal found 15/12£616

Wed 31/1205:05GEG - LHR

1 stop20h 35mUnited Airlines

Thu 8/111:10LHR - GEG

2 stops36h 11mUnited Airlines

Deal found 16/12£616

Wed 31/1205:30BOI - LHR

1 stop18h 35mVirgin Atlantic

Thu 8/110:45LHR - BOI

1 stop19h 27mVirgin Atlantic

Deal found 15/12£629

Wed 31/1206:00GEG - LHR

1 stop17h 05mKLM

Thu 8/111:05LHR - GEG

1 stop16h 49mKLM

Deal found 16/12£629

Wed 31/1205:00BOI - LHR

2 stops23h 20mAir Canada

Thu 8/113:25LHR - BOI

2 stops31h 10mAir Canada

Deal found 15/12£630

Wed 31/1205:05GEG - LHR

2 stops18h 05mMultiple Airlines

Thu 8/113:00LHR - GEG

3 stops31h 46mMultiple Airlines

Deal found 16/12£714

Wed 31/1210:42BOI - LHR

3 stops17h 38mMultiple Airlines

Thu 8/113:25LHR - BOI

2 stops27h 41mMultiple Airlines

Deal found 15/12£882

Tue 16/1209:10BOI - LHR

2 stops18h 40mMultiple Airlines

Wed 14/112:15LHR - BOI

2 stops15h 50mMultiple Airlines

Deal found 14/12£1,003

Wed 31/1208:20BOI - LCY

2 stops17h 45mMultiple Airlines

Thu 8/109:40LCY - BOI

2 stops17h 05mMultiple Airlines

Deal found 15/12£1,115

Fri 26/1205:55GEG - LHR

1 stop20h 05mMultiple Airlines

Tue 6/106:20LHR - GEG

2 stops17h 55mMultiple Airlines

Deal found 17/12£1,205

Fri 26/1206:00GEG - LHR

2 stops23h 30mLufthansa

Tue 6/107:25LHR - GEG

2 stops21h 57mLufthansa

Deal found 17/12£1,220

Fri 26/1206:00GEG - LHR

1 stop17h 05mKLM

Tue 6/110:45LHR - GEG

1 stop13h 30mKLM

Deal found 17/12£1,222

Best flights from Idaho to London
Discover carefully curated flight deals from Idaho to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 December 2025.

Thu 15/110:40JAC - LHR

1 stop16h 00mLufthansa

Thu 22/106:35LHR - JAC

2 stops21h 07mLufthansa

Deal found 17/12£446

Tue 17/217:24BOI - LHR

2 stops30h 16mUnited Airlines

Thu 26/211:10LHR - BOI

2 stops19h 38mUnited Airlines

Deal found 15/12£463

Thu 15/106:53GEG - LHR

2 stops20h 57mMultiple Airlines

Thu 22/106:35LHR - GEG

2 stops20h 41mMultiple Airlines

Deal found 16/12£463

Wed 4/305:51GEG - LGW

2 stops17h 39mAmerican Airlines

Mon 9/312:30LGW - GEG

2 stops30h 15mAmerican Airlines

Deal found 16/12£464

Wed 14/105:15GEG - LHR

1 stop20h 45mKLM

Sat 31/106:30LHR - GEG

2 stops16h 30mKLM

Deal found 16/12£464

Fri 16/112:58JAC - LHR

2 stops24h 12mVirgin Atlantic

Fri 23/120:25LHR - JAC

2 stops26h 59mVirgin Atlantic

Deal found 17/12£465

Fri 30/107:05LWS - LHR

2 stops20h 35mDelta

Fri 6/206:30LHR - LWS

2 stops22h 29mDelta

Deal found 16/12£474

Wed 25/212:00GEG - LGW

2 stops14h 55mIcelandair

Wed 11/311:55LGW - GEG

2 stops16h 42mIcelandair

Deal found 16/12£625

Tue 13/107:20BOI - LGW

2 stops28h 40mIberia

Tue 27/119:40LGW - BOI

2 stops32h 38mIberia

Deal found 15/12£647

Wed 4/312:38GEG - LHR

1 stop15h 22mLufthansa

Wed 11/307:40LHR - GEG

2 stops20h 38mLufthansa

Deal found 17/12£446

Thu 15/116:19IDA - LHR

2 stops32h 11mUnited Airlines

Wed 28/106:35LHR - IDA

2 stops34h 21mUnited Airlines

Deal found 16/12£464

Fri 16/114:40JAC - LHR

1 stop34h 10mKLM

Fri 23/120:25LHR - JAC

2 stops29h 41mKLM

Deal found 17/12£465

Fri 30/113:15IDA - LHR

2 stops15h 25mMultiple Airlines

Fri 6/206:20LHR - IDA

2 stops18h 31mMultiple Airlines

Deal found 16/12£469

Tue 13/105:45BOI - LHR

2 stops18h 20mDelta

Tue 20/106:30LHR - BOI

2 stops16h 47mDelta

Deal found 16/12£474

Wed 25/213:44GEG - LHR

2 stops19h 21mLufthansa

Wed 11/306:35LHR - GEG

2 stops21h 28mLufthansa

Deal found 16/12£452

Sat 31/114:40IDA - LHR

1 stop12h 00mUnited Airlines

Sat 7/206:35LHR - IDA

2 stops34h 21mUnited Airlines

Deal found 17/12£470

Fri 30/112:24LWS - LHR

1 stop13h 36mKLM

Fri 6/217:50LHR - LWS

2 stops35h 09mKLM

Deal found 16/12£470

Tue 17/205:40BOI - LHR

2 stops18h 25mDelta

Fri 27/206:30LHR - BOI

2 stops20h 40mDelta

Deal found 15/12£474

Thu 15/114:07IDA - LHR

1 stop12h 53mMultiple Airlines

Wed 28/116:30LHR - IDA

1 stop28h 07mMultiple Airlines

Deal found 16/12£485

Tue 24/212:38GEG - LHR

2 stops24h 22mLufthansa

Tue 10/306:35LHR - GEG

2 stops21h 43mLufthansa

Deal found 17/12£452

Thu 15/110:51IDA - LHR

1 stop15h 49mUnited Airlines

Thu 22/106:35LHR - IDA

2 stops21h 39mUnited Airlines

Deal found 17/12£470

Sat 31/107:05LWS - LHR

1 stop19h 25mKLM

Sat 7/216:25LHR - LWS

2 stops36h 34mKLM

Deal found 17/12£470

Sat 31/114:07IDA - LHR

1 stop15h 08mMultiple Airlines

Sat 7/214:25LHR - IDA

1 stop15h 11mMultiple Airlines

Deal found 17/12£491

Sat 31/107:05LWS - LHR

1 stop20h 50mDelta

Sat 7/215:05LHR - LWS

1 stop13h 54mDelta

Deal found 17/12£491

Wed 4/313:44GEG - LHR

2 stops21h 51mLufthansa

Mon 9/307:40LHR - GEG

2 stops20h 38mLufthansa

Deal found 17/12£452

Sat 31/112:30JAC - LHR

1 stop15h 45mUnited Airlines

Sat 7/206:35LHR - JAC

2 stops21h 07mUnited Airlines

Deal found 17/12£470

Wed 4/312:00GEG - LGW

2 stops14h 55mIcelandair

Wed 11/311:55LGW - GEG

2 stops16h 42mIcelandair

Deal found 16/12£625

Tue 17/205:51GEG - LGW

2 stops20h 59mIberia

Wed 4/319:40LGW - GEG

2 stops33h 33mIberia

Deal found 16/12£651

Tue 17/214:40BOI - LHR

1 stop12h 00mLufthansa

Tue 24/207:30LHR - BOI

2 stops21h 02mLufthansa

Deal found 17/12£454

Tue 17/213:44BOI - LHR

1 stop34h 41mUnited Airlines

Fri 27/206:35LHR - BOI

2 stops34h 37mUnited Airlines

Deal found 17/12£470

Last-minute flights from Idaho to London
Discover last-minute flight deals from Idaho to London. Data last updated 18 December 2025 and is based on user searches.

Tue 13/108:15BOI - LHR

1 stop20h 00mLufthansa

Tue 27/106:30LHR - BOI

2 stops18h 37mLufthansa

Deal found 15/12£454

Tue 13/108:15BOI - LHR

1 stop14h 40mLufthansa

Tue 20/111:35LHR - BOI

1 stop13h 32mLufthansa

Deal found 16/12£466

Wed 14/105:15GEG - LHR

1 stop20h 45mKLM

Sat 31/106:30LHR - GEG

2 stops16h 30mKLM

Deal found 16/12£464

Wed 14/112:19BOI - LHR

2 stops21h 31mLufthansa

Wed 21/120:15LHR - BOI

2 stops28h 52mLufthansa

Deal found 17/12£467

Thu 15/110:40JAC - LHR

1 stop16h 00mLufthansa

Thu 22/106:35LHR - JAC

2 stops21h 07mLufthansa

Deal found 17/12£446

Thu 15/112:24GEG - LHR

1 stop15h 36mLufthansa

Thu 22/106:35LHR - GEG

2 stops20h 41mLufthansa

Deal found 16/12£446

Thu 15/106:53GEG - LHR

2 stops20h 57mMultiple Airlines

Thu 22/106:35LHR - GEG

2 stops20h 41mMultiple Airlines

Deal found 16/12£463

Thu 15/116:19IDA - LHR

2 stops32h 11mUnited Airlines

Wed 28/106:35LHR - IDA

2 stops34h 21mUnited Airlines

Deal found 16/12£464

Thu 15/110:51IDA - LHR

1 stop15h 49mUnited Airlines

Thu 22/106:35LHR - IDA

2 stops21h 39mUnited Airlines

Deal found 17/12£470

Fri 16/112:58JAC - LHR

2 stops24h 12mVirgin Atlantic

Fri 23/120:25LHR - JAC

2 stops26h 59mVirgin Atlantic

Deal found 17/12£465

Fri 30/110:28BOI - LHR

1 stop16h 12mLufthansa

Fri 6/211:35LHR - BOI

1 stop13h 32mLufthansa

Deal found 16/12£453

Fri 30/113:15IDA - LHR

2 stops15h 25mMultiple Airlines

Fri 6/206:20LHR - IDA

2 stops18h 31mMultiple Airlines

Deal found 16/12£469

One-way flights from Idaho to London
Search for one-way flight options from Idaho to London. Find affordable one-way fares based on user searches. Data last updated 18 December 2025.

Fri 16/116:59GEG - LHR

3 stops35h 51mMultiple Airlines

Deal found 17/12£227

Thu 5/218:58IDA - LHR

3 stops34h 52mMultiple Airlines

Deal found 17/12£256

Fri 6/221:20IDA - LHR

2 stops56h 30mMultiple Airlines

Deal found 17/12£269

Sun 22/209:20GEG - LHR

1 stop17h 10mVirgin Atlantic

Deal found 17/12£289

Fri 16/112:24GEG - LHR

1 stop15h 36mLufthansa

Deal found 17/12£289

Sun 22/207:00GEG - LHR

2 stops18h 20mMultiple Airlines

Deal found 17/12£298

Thu 5/214:40IDA - LHR

1 stop12h 00mUnited Airlines

Deal found 17/12£298

Fri 16/116:59GEG - LGW

3 stops45h 56mMultiple Airlines

Deal found 17/12£310

Fri 6/207:20IDA - LHR

1 stop22h 55mAmerican Airlines

Deal found 17/12£313

Fri 16/111:25GEG - LCY

2 stops41h 20mUnited Airlines

Deal found 17/12£328

Fri 27/318:00BOI - LHR

3 stops31h 00mMultiple Airlines

Deal found 17/12£345

Fri 27/305:30BOI - LHR

2 stops19h 20mVirgin Atlantic

Deal found 17/12£351

Find flight deals from Idaho to London

Round-trip from	£446
One-way from	£227
Popular in	June
Cheapest in	October
Average price	£710

Lufthansa
4/3-11/3
3 total stops
41h 38m total
Idaho to London

Search Deals

16/1
3 total stops
35h 51m total
Idaho to London

Search Deals

Highest demand for flights based on searches. 23% potential increase in price (£154 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£28 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Thu 15/1

10:40-09:40

1 stop16h 00m

London Heathrow

Thu 22/1

06:35-20:42

2 stops21h 07m

£446

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 4/3

12:38-12:00

1 stop15h 22m

London Heathrow

Wed 11/3

07:40-21:18

2 stops20h 38m

£446

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 25/2

13:44-17:05

2 stops19h 21m

London Heathrow

Wed 11/3

06:35-21:03

2 stops21h 28m

£452

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 24/2

12:38-21:00

2 stops24h 22m

London Heathrow

Tue 10/3

06:35-21:18

2 stops21h 43m

£452

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 4/3

13:44-19:35

2 stops21h 51m

London Heathrow

Mon 9/3

07:40-21:18

2 stops20h 38m

£452

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 17/2

14:40-09:40

1 stop12h 00m

London Heathrow

Tue 24/2

07:30-21:32

2 stops21h 02m

£454

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 17/2

17:24-06:40

2 stops30h 16m

London Heathrow

Thu 26/2

11:10-23:48

2 stops19h 38m

£463

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Thu 15/1

06:53-11:50

2 stops20h 57m

London Heathrow

Thu 22/1

06:35-19:16

2 stops20h 41m

£463

SpokaneLondon

GEG - LGW

GEGLGW

Spokane

Wed 4/3

05:51-07:30

2 stops17h 39m

London Gatwick

Mon 9/3

12:30-11:45

2 stops30h 15m

£464

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 14/1

05:15-10:00

1 stop20h 45m

London Heathrow

Sat 31/1

06:30-15:00

2 stops16h 30m

£464

Flights are sorted by cheapest return flights first.

Deals found on 17/12

Showing 1-10 of 56 results

...

Best time to book a flight from Idaho to London

Have a flexible travel schedule? Discover the best time to fly to London from Idaho with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to London

What is the cheapest month to book a flight from Idaho to London?

Currently, July is the cheapest month in which you can book a flight from Idaho to London (average of £451). Flying from Idaho to London in June is currently the most expensive (average of £811). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ID to LON?

A simple way to save on the total cost of your ticket is to fly from Idaho to London in the evening. If you’re flexible enough to do this you can expect to save up to 59% on your trip compared to booking a flight in the morning.

Related info for your journey

How long is the flight from Idaho to London?
A quick flight from Idaho to London can take about 16h. Lufthansa provides one of the quickest options available for as low as £446. The distance from Idaho to London is about 4658 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most popular routes from Idaho to London?
While some choose either Spokane - London Heathrow or Spokane - London Gatwick, Boise Air Term. Gowen Fld - London Heathrow is the most popular route from Idaho to London.
Can I find deals for flights from Idaho to London that include hotel bookings?
Yes. In addition to deals on Idaho to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Idaho to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to London.
Can I find deals for business class flights from Idaho to London?
Yes. Cheapflights offers flight deals from Idaho to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Idaho to London?
Currently, July is the cheapest month in which you can book a flight from Idaho to London (average of £451). Flying from Idaho to London in June is currently the most expensive (average of £811). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Croydon

Slough

Hounslow

Luton

Gatwick

Wembley

Ilford

Brentford

Colchester

Hayes

Watford

Crawley

Winchester

Bedford

Romford

Chichester

Eastbourne

Guildford

Ipswich

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How does Cheapflights help users find flights from Idaho to London?

When you search for this flight from Idaho to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Idaho to London?

Millions of users choose and trust Cheapflights to book the best flight deals from Idaho to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Idaho to London with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Idaho to London flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Idaho to London become cheaper?

Of course! You can now track prices for flights from Idaho to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Idaho to London from £227

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Idaho to London

Cheapest flights from Idaho to LondonExplore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.

Explore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.

Find flight deals from Idaho to London

Keep the following information in mind while searching for Idaho to London flight deals. Data was last updated 18 December 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Idaho to London that are best for you.

Best time to book a flight from Idaho to London

Have a flexible travel schedule? Discover the best time to fly to London from Idaho with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Idaho to London

What is the cheapest month to book a flight from Idaho to London?

What is the cheapest time of day to fly from ID to LON?

Find hourly flight availability from Idaho to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 December 2025.

Related info for your journey

Find useful and relevant information for your journey from Idaho to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Idaho to London?

What are the most popular routes from Idaho to London?

Can I find deals for flights from Idaho to London that include hotel bookings?

How can I find direct flights from Idaho to London?

Can I find deals for business class flights from Idaho to London?

What is the cheapest month to book a flight from Idaho to London?

Travelling to a place near London?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to London

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Idaho to London?

Why should you use Cheapflights to find cheap flight tickets from Idaho to London?

Can Cheapflights find flights from Idaho to London with no change fees?

Can Cheapflights notify me if prices for flights from Idaho to London become cheaper?

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Cheapest flights from Idaho to London
Explore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.